Britney’s Backup Dancers Required To Take Drug Tests

"A source tells Eonline.com that, in an effort to keep the on-track pop star free from negative influences, her camp is requiring that all of her backup dancers submit to drug tests."

'They all had to be drug tested and, if they didn't pass, they were fired,' the insider says. I think they only do it for her because she is under strict watch. I think they just want good influences around her,' the source continued, adding that drug testing is uncommon practice.

Britney's camp is ensuring her safety with the backup dancers, who will be by Britney's side throughout her tour, making sure those around the popstar are clean.

"It's going to be a pretty big tour," says Robert Baker, the studio director at Millennium Dance Complex in North Hollywood, where Spears frequently rehearses. "They're going to have a three-ring circus with live animals, so it's probably stricter liability."

"I don't think it's a common practice, but each artist is different," Baker tells E! News, referring to the drug-testing issue. "Everyone is just trying to safeguard against any foreseeable problems."